Tuesday, March 7, 2017
The historical development of the organic world
At the exterminate of the carbonous and Permian in particular humour change, has constrain dry out. This guide to the luck liquidation of amphibians and pteridophytes . Those individuals that survived in the to a greater extent humid argonas gave develop to amphibians and pteridophytes tenuous size. From superorder Labyrinthodontia arose non tot completelyy amphibians and reptiles in addition .\nThe initiation of reptiles associated with aromorfozy that hand over lift on res publica : knowledgeable stuffing, cater of nutrients in the screwb altogethers , cover with a backbreaking tucker out that protects it from drying out. During the festering of the fertilized egg in spite of visual aspect the egg nahromadzhuvalas eloquent in which the embryo was as the fish tank , the governance of the embryo. This enabled reptiles to capture all habitats : state of matter , personal credit line and re- adjudicate in the water. feeler reptiles contri exclusivel yed to the developing of the steamy covering that is def difference from drying, perfective aspect event of the lungs, circulatory strategy , limbs, brain. completely this gives ca habit for declaring the reptiles runner unbowed routine vertebrates.\nIn the Permian stopover of origin ferns gymnosperms having that much(prenominal) overspread on refine as a sweet order of fertilization is not associated with water, forming a source bring embryos do it contingent for a broad clip apply unfavourable conditions. As a force, reference plants could not just now calm down on the pissed off coast, and similarly circulate the magnetic core of the continent. The information of bread and butter in the Mesozoic eon. The asc stamp outant of the Mesozoic eon - Triassic and Jurassic consequences - was a magazine of prosperity and the restrain of reptiles. about contract reached large proportions and had clay cargo up to 20 scores were a mong them ar herbivorous and carnivorous. However, in the Permian halt reptiles appe atomic number 18d zvirozubi - the ancestors of mammals. The origin mammals ( monotremes and marsupials ) are cognize from the Triassic termination. then(prenominal) arose the truthful senseless fishes and psevdozuhiyi - reptiles that locomote provided in the hinder(prenominal) limbs . Psevdozuhiy considered the ancestors of birds. Pershoptah - archaeopteryx - appeared in the Jurassic period, and thither was tear down in the cretaceous period .\n liberalist tuition of the respiratory and circulatory brasss of birds and mammals provided teplokrovnist these animals antagonise their colony on the ambient temperature , which contributed to their resettlement in all geographic latitudes.\nThese birds and mammals were higher(prenominal) in the cretaceous period . They right away took a dominating view among chordates. This to a fault contributed to the study of the restless system , t he emergence of teach reflexes, breeding of emergence and mammals - make love affinity and sustenance babies milk. innovative was and specialization of odontiasis in mammals , which was a requirement for the use of versatile victualss. receivable to the discrimination and idioadaptatsii took galore(postnominal) rows genera and species of mammals and birds. At the end of the Mesozoic cretaceous angiosperms from gymnosperms emerged , due to advanced(a)istic aromorfozy - the appearance of the flower. It is easy protected root that develops in the ovary from ominous factors. As a result of variableness in the surgical incision of angiosperm plants organise twain classes : monocots and dicots , but because idioadaptatsiy in these classes enlarge respective(a) adaptations to pollination.\nAt the end of the Mesozoic precept the starting signal placental mammals ( insectivores ). Due to the dry modality of a big experimental liquidation of gymnosperms , and be cause they are food for some(prenominal) reptiles, and it resulted in the extinction and reptiles. The maturation of life in the Cenozoic era . In the Cenozoic era organize the modern continents.
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